Heidenhain CNC Pilot 4290 V7.1 Description of B and Y axes User Manual download pdf (Page 23)

HEIDENHAIN CNC PILOT 4290 23

1.4 DIN PLUS: Section Codes

SURFACE_Y section

The section code identifies the YZ plane (G19). For machines equipped

with a B axis, it defines the tilted plane.

Without B axis: The reference diameter defines the contour position

in the X direction; the C axis angle defines the position on the

workpiece.

With B axis (see figures): SURFACE_Y additionally performs the

following transformations and rotations for the tilted plane:

 Shifts the coordinate system to the position I, K

 Rotates the coordinate system by the angle B; reference point: I, K

 H=0: Shifts the rotated coordinate system by –I. The coordinate

system is moved “back.”

Shifting “back” coordinate system: The CNC PILOT evaluates the

reference diameter for the cutting limit. This value is also used as the

reference value for the depth that you program for drilling operations

and milling contours.

Since the reference diameter is referenced to the current zero point,

it is recommended when working in a tilted plane, to shift the rotated

coordinate system “back” by the distance –I. If the cutting limits are

not needed, for example for drilling holes, you can disable the shift of

the coordinate system (H=1) and set the reference diameter to 0.

Example: “SURFACE_Y”

PROGRAMMKOPF [PROGRAM HEAD]

...

CONTOUR Q1 X0 Z600

ROHTEIL [BLANK]

...

FERTIGTEIL [FINISHED PART]

...

MANTEL_Y X118 C0 B130 I59 K0 [SURFACE_Y]

...

BEARBEITUNG [MACHINING]

...

H=0

B, I, K

K

H=1

I

Parameters

X Reference diameter

C C axis angle—Defines the spindle position

Parameters

X Reference diameter

C C axis angle—Defines the spindle position

B Plane angle: Positive Z axis

I Plane reference in X direction (radius)

K Plane reference in Z direction

H Automatic shift of the coordinate system (default: 0)

 0: The rotated coordinate system is shifted by –I

 1: The coordinate system is not shifted

Please note:

 X is the infeed axis in a tilted coordinate system. X

coordinates are entered as diameter coordinates.

 Mirroring the coordinate system has no effect on the

reference axis of the tilt angle (“B axis angle” of G714).

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Heidenhain CNC Pilot 4290 V7.1 Description of B and Y axes User Manual Page 23

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